/**********************************************************************************************
    Copyright (C) 2014-2015 Oliver Eichler <oliver.eichler@gmx.de>
    Copyright (C) 2018 Norbert Truchsess <norbert.truchsess@t-online.de>

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

**********************************************************************************************/

#ifndef CLINEOPMOVEPOINT_H
#define CLINEOPMOVEPOINT_H

#include "mouse/line/ILineOp.h"

/**
   @brief Line operation that moves an existing point to a new position.

   A left-click near a point picks it up (isDragging = true); the point then follows the cursor
   and routing fires on each mouse-move. A second left-click drops it at the new position.
   Right-click or abortStep() cancels and restores the original position via the undo history.
 */
class CLineOpMovePoint : public ILineOp {
 public:
  CLineOpMovePoint(SGisLine& points, CGisDraw* gis, CCanvas* canvas, IMouseEditLine* parent);
  virtual ~CLineOpMovePoint();

  void leftClick(const QPoint& pos) override;
  void mouseMove(const QPoint& pos) override;
  void rightButtonDown(const QPoint& pos) override;

  void drawFg(QPainter& p) override;

  bool abortStep() override;

 private:
  bool isDragging = false; /**< true while a point has been picked up and follows the cursor */
};

#endif  // CLINEOPMOVEPOINT_H
